From the introduction:
You find your feet cracking, thankfully not literally, onto dark tarmac and as you get your bearings you find you’re in some remote part of Tokyo.
A phone is ringing somewhere...
It doesn’t take you long to figure out that this isn’t exactly your world. There something about the broadcasts on the TVs at some of the shops some minor detail that you know never happened in your world. This is Earth, but different.
The ringing grows louder...
You figure out that there are a lot more psychics and mediums and the like. And they seem fairly reputable for some reason.
The clack of a phone. No words are exchanged, but that which is without time meets that which is beyond all things of this world. A plea goes out, there’s a smile.
However, just as you’ve come to full grasp with these facts, however fast or slow, a card lands at your feet.
Hey, this looks fun.
Welcome to Tokyo, seems you’ve been given a very special opportunity. You’ve been invited by yet another being to go to Psyren, a wasteland of mysteries and monsters that one access through phone cards. This strange and deadly place unlocks the power of the mind and... well that would be telling.
Good luck.